2019-05-25T16:58:44Zhttps://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1159212018-07-18T12:17:18Zcom_10261_35com_10261_5col_10261_288High surface - highly N-doped carbons from hydrothermally-treated tanninBraghiroli, Flavia L.Fierro, VanessaIzquierdo Pantoja, María TeresaParmentier, JulienPizzi, AntonioDelmotte, LucFioux, PhilippeCelzard, AlainHydrothermal carbonisationAminated tanninNitrogen-doped carbon materialsCarbon gelsNitrogen-doped carbon materials (NCMs) were obtained by amination of tannin by
hydrothermal carbonisation (HTC). NCMs presented different morphologies depending on the
amination method: (i) powders by HTC of tannin in a concentrated aqueous ammonia solution; (ii) gels
without using any crosslinker by HTC in distilled water of tannin first dissolved in concentrated
ammonia and then evaporated. Whatever the method, (i) or (ii), HTC was carried out at different
temperatures: 180, 190, 200, 210 or 220°C, with further pyrolysis at 900°C under nitrogen. The
morphology and chemical composition of the resultant materials were discussed. We compared our
results with those reported in the open literature and we concluded that HTC of tannin in a
concentrated aqueous ammonia solution allowed obtaining outstanding materials because they have
both surface areas, higher than 500 m2 g-1, and high N content, around 8 wt.%.2015-05-29T12:08:54Z2015-05-29T12:08:54Z2015-04-01Pre-printIndustrial Crops and Products 66 : 282-290 (2015)http://hdl.handle.net/10261/11592110.1016/j.indcrop.2014.11.022engPreprinthtpp://dx.doi.org/10.1016/j.indcrop.2014.11.022SíopenAccessElsevier